I'm sorry for you and your familey. I found out last year my thyroid wasn't working at all also, and i was 26 years old, It was awefull, i would pass out, had no energy, lost my voice, ect. ect. It's going to be a long road to recovery but she should start to feel better within a week of taking meds, and then keep getting better from there. Good luck!!! I know she must be alot older then me, but My voice got better within a week, and within a month it was back to normal. I also found out i had an enlarged heart also because of haveing it so long, and my thyroid not working at all. They say that in time it will go back to normal. You say this happend around x-mas How long has she been on meds?